SAN FRANCISCO — The US Coast Guard suspended San Francisco offshore boat races pending a safety review after a yacht accident that left one dead and four others missing.

Though San Francisco police found the owner and crew of the Low Speed Chase yacht were not negligent in the April 14 accident, the Coast Guard called a temporary halt Thursday to offshore races until an investigation into safety plans and procedures is completed.

The ban was set to affect Saturday’s Offshore Yacht Racing Association Duxship Race and the Singlehanded Sailing Society Farallons Race on May 12, the Coast Guard said in a statement.

Capt. Cynthia Stowe, Coast Guard captain of the Port of San Francisco, said of the decision, “This temporary safety stand-down from offshore racing will allow the Coast Guard and the offshore racing community to further our common safety goals.”

Some yacht club members expressed disappointment over the decision.

Nathalie Criou, a member of the Singlehanded Racing Club, told FOX affiliate KTVU that though she and other racers grasp the tragedy, she has raced her 27-foot (eight-meter) boat around the nearby Farallon Islands many times, and feels races do not need to be altered in order to conduct a safety review.

“I am not sure that the learning from an inquiry would lead to drastic changes,” Criou said. “If that’s not the case, then the racing we do today should continue.”

The Low Speed Chase, a 38-foot (12-meter) racing yacht, hit rocks off the Farallon Islands, about 30 miles (48 kilometers) west of San Francisco, while competing in the Full Crew Farallons Race, a 58-nautical-mile contest that starts and finishes in San Francisco.

Marc Kasanin, 46, died and was pulled from the water by an Air National Guard helicopter. Three other crew members were rescued but four sailors have yet to be found.

However, an unidentified body that washed ashore late Tuesday on the Sonoma Coast may be one of the yacht’s missing crew members, Lt. Glenn Lawrence of the Sonoma County Sheriff’s Office told the Santa Rosa Press Democrat. An autopsy was scheduled Friday, according to the Sonoma County coroner.

Saturday’s Duxship Race was set to be a bay race rather than the ocean race originally planned. Rather than sailing 30 miles (48 kilometers) and back, sailors will be confined to a 20-mile (32-kilometer) course and will go no further than one mile (1.6 kilometers) past the Golden Gate Bridge, according to the report.

All races that stay within the bay are not impacted, the Coast Guard added.